Kenya’s President Uhuru Kenyatta will be seeking a second term and is expected to be challenged by a candidate supported by an alliance of opposition parties, including Ms Mboko’s ODM.

Ms Mboko said that the opposition alliance had a better chance of winning the elections if its supporters registered in huge numbers.

Calls for sex boycotts are common in Kenya. In 2009, women activists held a week-long sex strike to get then President Mwai Kibaki and Prime Minister Raila Odinga and their allies to reconcile after falling out.